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* Use size_t instead of u32bit in all of pubkeylloyd2010-10-122-3/+3
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* Fix a few hundred Doxygen warningslloyd2010-06-151-1/+1
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* There are some nasty API problems that are caused by having to pass alloyd2010-03-191-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | PRNG everywhere. The removal of the global PRNG was generated by a desire to remove the global library state entirely. However the real point of this was to remove the use of globally visible _mutable_ state; of the mutable state, the PRNG is probably the least important, and the most useful to share. And it seems unlikely that thread contention would be a major issue in the PRNG. Add back a global PRNG to Library_State. Use lazy initialization, so apps that don't ever use a PRNG don't need a seeding step. Then have AutoSeeded_RNG call that global PRNG. Offer once again RandomNumberGenerator& Library_State::global_rng(); which returns a reference to the global PRNG. This RNG object serializes access to itself with a mutex. Remove the hack known as Blinding::choose_nonce, replace with using the global PRNG to choose a blinding nonce
* Oops. Secret nonce/seed for blinding for DH and ElGamal was 2^x mod p.lloyd2010-03-091-1/+1
| | | | | | | | | However if the group generator is 2, that's precisely the public key, which is hardly secret at all. Instead use y^x mod p, which while a little dubious in terms of mathematical structure is probably OK after being hashed through SHA-512 with some high resolution timestamps.
* Deconstify PK_Ops. It's quite reasonable that some op will want tolloyd2010-03-092-3/+3
| | | | | | | | | | | | | precompute only as needed, or will want to access some other expensive resource or etc. Change how the secret for generating blinding is done in cases where a PRNG isn't available. Use the operations public op to hide the secret, for instance the seed for a DH blinding variable is 2^x mod p. Make use of being able to mutate internal structures in the RW signer, since that does have access to a PRNG, so use it to initialize the blinder on first call to sign().
* Use preexisting powermod precomputations for setting up blinderslloyd2010-03-091-1/+1
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* Add back in blinding to RSA, RW, ElGamal, and DH.lloyd2010-03-082-13/+22
| | | | | | | | | | | | | | | | There are multiple unsatisfactory elements to the current solution, as compared to how blinding was previously done: Firstly, blinding is only used in the baseline implementations; the code using OpenSSL and GMP is not protected by blinding at all. Secondly, at the point we need to set up blinding, there is no access to a PRNG. Currently I am going with a quite nasty solution, of using a private key parameter to seed a simple PRNG constructed as: SHA-512(TS1 || private_key_param || public_key_param || TS2) I really want to fix both of these elements but I'm not sure how to do so easily.
* Rename PK_Ops::Signature_Operation to PK_Ops::Signaturelloyd2010-03-051-1/+1
| | | | Rename PK_Ops::KA_Operation to PK_Ops::Key_Agreement
* This checkin represents a pretty major change in how PK operations arelloyd2010-03-046-198/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | performed. Up until now, each key object (eg DSA_PublicKey or ECDH_PrivateKey) had two jobs: contain the key material, and know how to perform any operations on that key. However because of a desire to support alternative implementations (GNU MP, hardware, whatever), there was a notion of operations, with the key objects containing an op that they got via engine rather than actually implementing the underlying algorithms directly. Now, represent the operation as an abstract interface (typically mapping a byte string to a byte string), and pass a plain Public_Key& or Private_Key& to the engine. The engine does any checks it wants (eg based on name, typeid, key sizes, etc), and either returns nothing (I'll pass) or a pointer to a new operation that represents signatures or encryption or what-have-you using that key. This means that plain key objects no longer contain operations. This is a major break with the traditional interface. On the other hand, using these 'bare' operations without padding, KDFs, etc is 99% of the time a bad idea anyway (and if you really need them, there are options so you get the bare op but via the pubkey.h interfaces). Currently this change is only implemented for DH and ECDH (ie, key agreement algorithms). Additionally the optional engines (gnump and openssl) have not been updated. I'll probably wait to touch those until after I can change them all in one go for all algos.
* Remove no-op DH_Public_Key::X509_load_hooklloyd2010-03-042-12/+1
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* Remove DH_PrivateKey::PKCS8_load_hooklloyd2010-03-042-15/+23
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* Add similar decoding constructors to the private keyslloyd2010-03-041-5/+7
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* Add a new constructor to each public key algorithm (only the publiclloyd2010-03-041-5/+6
| | | | | | | keys so far, private keys not changed) that takes an AlgorithmIdentifier and a MemoryRegion<byte>&. This performs the X.509 decoding. It is not possible anymore to create uninitialized PK objects.
* Add missing BOTAN_DLL exports.lloyd2009-12-162-2/+2
| | | | Move most of the engine headers to internal
* Full working amalgamation build, plus internal-only headers concept.lloyd2009-12-162-12/+9
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* Remove the 'realname' attribute on all modules and cc/cpu/os info files.lloyd2009-10-291-2/+0
| | | | | Pretty much useless and unused, except for listing the module names in build.h and the short versions totally suffice for that.
* Split up util.h into 3 fileslloyd2009-09-171-1/+1
| | | | | | | - rounding.h (round_up, round_down) - workfactor.h (dl_work_factor) - timer.h (system_time) And update all users of the previous util.h
* Add a script that reads the output of print_deps.py and rewriteslloyd2009-07-151-2/+2
| | | | | | the info.txt files with the right module dependencies. Apply it across the codebase.
* Move the contents of pubkey/pubkey (which was kind of a catch-all tolloyd2009-07-151-1/+0
| | | | | | | just toplevel pubkey). This was a convention I realized made sense sometime on when I was first doing the modularization changes. Move pkcs8.* and x509_key.* to pk_codecs
* engine.h had copies of some declarations from pk_engine.h that had notlloyd2009-05-131-1/+1
| | | | | | been removed when that portion of the code was split off. Remove the duplicated code from engine.h and update some code in pubkey that still relied on the declarations in engine.h instead of pk_engine.h
* Thomas Moschny passed along a request from the Fedora packagers which camelloyd2009-03-305-71/+81
| | | | | | | | | | | | | | | up during the Fedora submission review, that each source file include some text about the license. One handy Perl script later and each file now has the line Distributed under the terms of the Botan license after the copyright notices. While I was in there modifying every file anyway, I also stripped out the remainder of the block comments (lots of astericks before and after the text); this is stylistic thing I picked up when I was first learning C++ but in retrospect it is not a good style as the structure makes it harder to modify comments (with the result that comments become fewer, shorter and are less likely to be updated, which are not good things).
* Remove pk_lookup - half of it (look_pk.{cpp,h}) depended on libstate directly,lloyd2008-11-111-1/+0
| | | | | the other half was relied upon by pubkey. Move the contents into those two modules. Update deps.
* Remove dependency on Default_Engine from pubkey codelloyd2008-11-082-21/+0
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* Add Doxygen comments to dh.h (from InSiTo)lloyd2008-10-131-13/+34
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* Move look_pk and pk_algs to new module pubkey/pk_lookuplloyd2008-10-011-0/+1
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* Handle building Botan with almost all public key code disabled (though onlylloyd2008-10-011-2/+2
| | | | | | | with the aid of macro hackery, at the moment). Change DH feature macro to BOTAN_HAS_DIFFIE_HELLMAN Change NR feature macro to BOTAN_HAS_NYBERG_RUEPPEL
* Move last pieces of algorithm-specific code from general 'pubkey' modulelloyd2008-10-011-1/+1
| | | | | into algorithm-specific directories. (Dependencies still remain on these in core/libstate, though).
* Split Diffie-Hellman off almost completely, such that nearly none oflloyd2008-10-014-3/+66
| | | | | | | | | | it builds if it is disabled. Current deficiency: due to #if defined(BLAH) in the engine code, Botan will not be binary compat across different configurations b/c the vtable will change size. Move some source from core/ to core/libstate where it belonged (engine stuff)
* Rename pk dir to pubkey, avoids tab-completion collision with pk_padlloyd2008-10-015-0/+299